Probably none of you have ever beaten the Ender Dragon without cheating, using creative mode, or playing without Peaceful, but if you ever happen to play it without being a wimp, here's the walkthrough I made for it.
To begin, you should get the following items:
• 1 Full Stack of Arrows
• 2 Bows
• Wearing Complete Iron Armor
• An Extra Complete Set of Iron Armor
• 1 Enchanted Diamond Sword (Just incase)
• 5 Full Stacks of Snowballs (For snowballs, 16 is a full stack.)
• 10 Bread, or Mushroom Soup, or Golden Apples
• 1 Iron Pickaxe
That should be all you need. Feel free to bring anything else that might help you.
First, before doing anything else, you have to shoot the purple/pink things that float on top of the Obsidian Spikes. When the Ender Dragon gets close to one of those, it heals him, so you have to get rid of every single one of them before attacking.
Once you've done that, you're ready to go on the offensive. Don't forget to replace your iron armor with your extra iron armor if you get hit a lot. Don't use your Enchanted Diamond Sword unless you need to. It is a bad idea to go with your sword when you have ranged weapons. If you have any arrows left from destroying those healers, use your arrows to shoot the Ender Dragon at full force. If your bow breaks, replace it with your extra. Remember that staring at the Ender Dragon makes him flee, and looking away makes him charge at you. Keep firing your arrows at him until you run out. When you run out, use your snowballs.
After doing all of that, if you have no more ranged ammo, go with your sword. If you run low on health, use the food you brought. Keep attacking until he's dead, then gather all of the experience and use your Iron Pickaxe to gather as much End Stone as you want, and use some of that End Stone to make yourself a path to the portal and run out.
I wonder how you get ON the pillars anyway.. do you have to tower up? (place some brick below you while jumping I mean)
On topic: Dude, the fight is easy. Also, the Ender Crystals explode once destroyed.
I wasn't aware I could beat the game with common sense!
OT: This was the worst tutorial I've ever read. You better damn well bring a pumpkin to stop ender range, use the snowballs to destroy the heal towers, and use the extras to build snow golems to keep endermen at bay and supply yourself with free snow.